From d6c466074d781bb89405f7827f22acbf99b88d51 Mon Sep 17 00:00:00 2001
From: Daniel Lo Nigro <daniel@dan.cx>
Date: Sat, 19 Nov 2016 18:37:23 -0800
Subject: [PATCH] Stop Babel requiring entire package.json just to get core
 version number. Reduces build size by ~3 KB

---
 gulpfile.js               | 5 +++++
 src/babel-package-shim.js | 5 +++++
 2 files changed, 10 insertions(+)
 create mode 100644 src/babel-package-shim.js

diff --git a/gulpfile.js b/gulpfile.js
index ca463f4..4f096cd 100644
--- a/gulpfile.js
+++ b/gulpfile.js
@@ -38,6 +38,7 @@ function webpackBuild(filename, libraryName, version) {
     plugins: [
       new webpack.DefinePlugin({
         'process.env.NODE_ENV': '"production"',
+        BABEL_VERSION: JSON.stringify(require('babel-core/package.json').version),
         VERSION: JSON.stringify(version),
       }),
       // Use browser version of visionmedia-debug
@@ -45,6 +46,10 @@ function webpackBuild(filename, libraryName, version) {
         /debug\/node/,
         'debug/browser'
       ),
+      new webpack.NormalModuleReplacementPlugin(
+        /..\/..\/package/,
+        '../../../../src/babel-package-shim'
+      ),
       new webpack.optimize.OccurenceOrderPlugin(),
       new webpack.optimize.DedupePlugin()
     ]
diff --git a/src/babel-package-shim.js b/src/babel-package-shim.js
new file mode 100644
index 0000000..7e91b7e
--- /dev/null
+++ b/src/babel-package-shim.js
@@ -0,0 +1,5 @@
+/**
+ * A shim that replaces Babel's require('package.json') statement.
+ * Babel requires the entire package.json file just to get the version number.
+ */
+export const version = BABEL_VERSION;